HDRA-RF High Efficiency, High Turndown Low NOx Burner
Multi-Fuel Burner for Asphalt Dryers
The Webster Combustion model HDRA-RF is a multi-fuel register-style burner for asphalt rotary dryers that allows users to shape the flame by automatically controlling the register vanes to optimally fit their rotary dryer and combustion
zone. This allows the Webster burner to operate with a shorter flame than products offered by other asphalt burner manufacturers. This flame-shaping capability means the flame will not impinge on the material, and CO can be maintained at much lower levels than currently available. In addition, NOx levels for the HDRA-RF are significantly lower than typically seen in asphalt applications. The Webster Combustion HDRA-RF operates with lower motor HP, an optionally supplied VFD and an inlet air damper, which allows for higher turndown ranges to reduce energy usage and provide greater total energy savings.
The Webster Combustion HDRA-RF burner readily adapts to mount on both Parallel Flow and Counter Flow Dryers, and the burner housing and fan can be installed in multiple configurations depending on space constraints and elevator location. The Webster Combustion HDRA-RF Series Asphalt Burner is capable of burning a wide range of fuels, either separately or simultaneously, including Natural, LP, and low BTU gas, all commercially available grades of fuel oil, and qualified waste oils. A dual manifold combustion head is available for applications firing multiple gas fuels.
ABMS (Asphalt Burner Management System)
The ABMS (Asphalt Burner Management System) will provide precise material temperature control in either manual or automatic mode. This allows for optimum performance and emissions control. The system maintains the negative pressure in the drum by controlling the outlet damper of the exhaust fan or through the exhaust fan VFD. The ABMS provides an interface to the system
through the HMI and panel push-button switches and acts as the primary point of control. The panel HMI displays setup, diagnostic, and troubleshooting tools to allow the operator full control of the burner, with ethernet communications so you can stay connected from anywhere. Multiple status screens are available in the system for trouble-shooting and the system has continuous data logging which is stored on a hard drive and can be exported through a USB connection.
FEATURES:
Flame Stability and Turndown
- Excellent flame stability for reliable performance
- Shorter flame than competitive products
- Low excess air for extremely efficient operation
- Fully modulating register for automatic flame shaping
- High turndown rates
- Up to 10 to 1 on Gas firing
- Up to 8 to 1 on oil firing
- High combustion efficiency
- Fire multiple fuels
- Natural, LP, or Digester gas
- No. 2 through No. 6 Oils
Flexible Configurations
- Configurable blower housing to match application requirements
- Proven ignition system with an extremely stable pilot
- High efficiency combustion air fans to optimize electrical needs
- Access doors for easy service of firing head and fan for maintenance
- Remote mounted combustion air fan and motor
- Optional VFD and inlet air damper for precise air control
- Air atomized oil systems may include an optional air compressor supplied with the burner package
- Adaptable to a range of existing aggregate rotary dryer models
Twister Multi-Fuel Asphalt Burners for Aggregate Drying
Fully Modulating Register Burner for Automatic Flame Shaping
The Webster Combustion Twister series is an open-fired register-style burner for asphalt plants that allows the user to shape the flame by controlling the register vanes to optimally fit their aggregate dryer and combustion zone. This flame shaping capability means the flame will not impinge on the material, and CO can be maintained at lower levels. The Twister register can be controlled using either a servo or linkage to shape the flame quickly and easily during start-up, or when mix changes may require a change in setup.
The Webster Combustion Twister series open-fired burner operates with low motor HP and an integrally mounted fan, meaning users will enjoy a more compact burner system. Optionally supplied VFDs and control systems are available to maximize turndown capabilities, increase fuel savings and reduce total energy usage.
The Twister Series asphalt plant burners are capable of burning a wide range of fuels, either separately or simultaneously, including Natural, LP, and low BTU gases, all commercially available fuel oils, and qualified waste oils.
FEATURES:
Flame Stability and Turndown
- Excellent flame stability for reliable performance
- Fully modulating register for automatic flame shaping
- Fire multiple fuels
- Natural and LP Gas
- No.2 through LP Gas
- Waste Oil
- Integral combustion fan
- Turndowns up to 8:1
- Proven ignition system with extremely stable pilot
- High efficiency combustion fans to optimize energy savings
- Optional VFD for precise control
- Compressed air atomization for oil firing
- The Twister can be controlled by the ACS-100 Asphalt Plant Burner Control System
- Works on Counterflow Asphalt Plants or Drum Mix Asphalt Plants (for hot mix batch flow)
- Also suitable for many rotary drying applications (sand, limestone, gravel, minerals, etc).
Flexible Configurations
- Configurable blower housing to match application requirements
- Proven ignition system with an extremely stable pilot
- High efficiency combustion air fans to optimize electrical needs
- Access doors for easy service of firing head and fan for maintenance
- Remote mounted combustion air fan and motor
- Optional VFD and inlet air damper for precise air control
- Air atomized oil systems may include an optional air compressor supplied with the burner package
- Adaptable to a range of existing aggregate rotary dryer models
For more information on any of these asphalt burners, reach out to Motion Engineering today.
